Separates the lid cleanly and hygienically with an exact cutalong the outside edge. Neither cutting wheel nor cutting edge will come into contact with the inside contents, and the lid which can be used to reseal the can, will also not fall in. There is no risk of injury because while being cut open the edge will be rounded automatically. The cutting wheel and cog wheels, constructed of hardened special steel (for better cutting properties), are embedded in a plastic case.